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y TANNING PROCESS.

No. 341,583. Patented May 11, 1886.

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YUNITED STATES PATENT OFFICE.

FREDERICK LATULIP, OF SYRACUSE, NEV YORK, ASSIGN OR OF ONEFOURTH TO JOSEPH I. AUMONI), OF SAME PLACE.

TANNING PROCESS.

SPECIFICATION forming part of Letters Patent No. 341,583, dated May 11, 1886.

Application filed October 31,1885. Serial No. 181.549.

To @ZZ whom, it may concern.-

Be it known that I, FREDERICK LATULIP, of Syracuse, in the county of Onoudagarand State of New York, have invented certain new and useful Improvements in Process of Treating Rawhide for Chair Seats and Backs; and Ido hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art 1o to which it a-ppertains to make and use the same, reference being had to the accompanying drawings,and totheletters of reference marked thereon, which form part of this specification. My invention relates to the manufacture of chair seats and backs ot' rawhide; and it con sists in the improved process for that pur pose, hereinafter fully described, and specifically pointed out in the claim.

In the drawings, Figure l is a view of the squeezing or moisture-expelling rolls used in my process, showing them in end elevation, with a piece of the material passing through them. Fig. 2 is a top plan view ot' a strip of the material ot' a width equal to the width of the sea-t to be made, as hereinafter described;

and Fig. 3 is a view in front elevation showing the finishing-roll, with a strip ot' the linishing material passing through it.

Like letters arc used to designate thesame 3o parts wherever they occur in the drawings.

In carrying out my invention, I take the hide alter it has been treated in the usual manner adopted by tanners, as follows, viz: with a solution of lime to remove the hair; l5 second, with running water to remove the linie; third, with a solution of guano to full the skin, and, fourth,washed,when it is ready to undergo the operation involved in my process, which is as follows, viz:

First. I roll the hide thus prepared (marked a in Fig. l) between plain rolls-such as represented at A I5 in Fig. 1, in order to press out all moisture; These rolls are simply plain squeezingrolls, and may be of any ordinary or approved construction suitable for the purpose.

Second. I take the hide thus rolled and soak it in a solution of acidulated water.

Third. I take the hide and soak it in a solution of potash.

Fourth. I now wash the hide in clear water, and again roll it through squeezing-rolls to expel the moisture.

(No model i Fifth. I now treat the hide with a solution of ammonia and alcohol.

Sixth. I soak the hide in a suitable staining liquid.

Seventh. I cut the hide into strips, as shown in Fig. 2, the width ofthe chair seat or back.

Eighth. I pass the strip ol' skin thus pre- 6o pared between hollow imprinting or impression rollers C D, which have their surfaces carved or cast with the proper formation to produce any particular design desired. Either roll may contain thc pattern and the other be plain, or the two may be made to correspond, one having the design cameo and the other intaglio. [have shown one roller plain, but do not, ofcourse, confine myself' to such arrangement. These rolls, hollow, as 7o before mentioned, are supplied with steam by pipes E F G, through which the steam passes to the. interior of the rolls and heats them. The heat of the rolls tixes the impression on the hide by drying out while rolling.

The result of this process is an article of great merit. The seat or back, finished as shown, for example, at H, Fig. 3, is very strong,and sufficiently ornamental for the purpose, and will lasta long time.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

The improved process for the manufacture of rawhide chair seats or backs, consisting in treating fullcd skin by rolling between flat rolls to express moisture, then treating it with acidulated water, next with solution of potash, then washing and again expressing moisture by rolls, next treating with solution of 9o ammonia and alcohol, then with a suitable staining liquid, next cutting into strips the width of the finished article, then running said strips between hollow steam-heated impression-rolls, and finally cutting into proper hi FREDERICK Xs LATULII.

mark.

Vitnesses:

J. H. TURGK, THOMAS RYAN. 

